to the left of the ethernet, is a grounding connector (metallic loop).
connect grounding wire there. for the groove, you can only use the shielded cable and ground at the bottom of the tower (at the next device).
Ok, I suspected that strange ring to be the ground. How to connect a cable to that? Only I can think of is solding which is not my thing, specially in such close space.
So, if the groove is to be grounded by shielded cable it means the supplied powershot lead is therefore useless? A bit strange philosophy; tell buyer about a preferred connection but than deliver the buyer with assesories that don't allow it. So buyer has to buy extra equipment to make it happen....
Why not a simple butterfly screw like all the 'legacy´ MT units used to have? Like the RIC's or the outdoor boxes...
Like I said before, new devices of MT ar not in all aspects improved compared to the past.
I am still using loads of RIC's, all I need is to upgrade rb122's and r133C3's into 411's or 711's.
These RIC's are still about the best CPE's I have except maybe that they are only single chain. It's such a pity they are not in production anymore...
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Rudy R. Puister
WISP operator based on MT routerboard & ROS.